What do you think would be a better mod?

An aluminum driveshaft or Steeda pullies.

Current mods are...

JLT RAI, 75mm throttle body, TrickFlow plenum, MAC o/r prochamber, Bassani catback, SCT XCal II 91 & 93 octane tunes, 4.10's, MGW shifter, MM full length sfc's, ford "c" springs

 

I say driveshaft but all i know that its good for is weight saving. The pullies are a waste IMO.
Id say get some LCAs

 

I've got a set of Steeda LCA's and bumpsteer kit in the mail. Thanks for the suggestion!

 

i would do the pullies, power is power

unless your doing a aluminum driveshaft and flywheel then it might not be worth it.

if you go to the track, i have read you wont leave as hard with almuminum DS and flywheels

 

This might sound dumb but whats a bumpsteer kit?

 

I have the driveshaft, and had the pulleys. I did not notice a performance gain with either.

 

The UDPs aren't really a power mod, I'd say its more for better gas mileage to make up for the other mods.

If you want to complete your bolt on list, get those and some LTs.

 

Dont go aluminum drive shaft. It might just break. Go carbon fiber.

 

I'd say UDP's over the driveshaft. If for no other reason, I gained a couple of mpg's with my bbk's.

 

Explain please.

As for the op, I have both the aluminum drive shaft and steeda pullies and i have no complaints. If you're looking for a huge performance upgrade, don't do either.